2.采用迷宫式阀笼结合压力平衡式阀芯的设计,由多个同轴表面分布着迷宫曲径的圆柱盘(层叠合组成,根据介质工艺参数的不同,设计多个不同迷宫曲径规格与叠合累数组合成阀笼,阀笼将总的流路分成许多细小与迂回甚至台阶状分布的节流通路,迫使流体不断地改变流向与流通面积等逐步降低流体压力,以达到预防闪蒸,空化现象的发生,延长阀内件的使用寿命、此种内件结构适合于各种易产生阻塞流造戍汽蚀的工艺流体的工况。
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